Can color ring tones be opened by SMS?

Hello, China Telecom's CRBT service can be opened through telecom customer service, and users can also log in to Telecom Philharmonic official website to open the CRBT service themselves. These methods are as follows:

1, open China Telecom Philharmonic official website, and then click CRBT on the top right of the home page to open it.

2. Then open the CRBT service according to the page prompts.

Description of tariff: 5 yuan/month, subject to the provincial tariff.

Other opening methods: edit the short message KT and send it to 1 18 100, and follow the prompts.

Other users: telecom fixed-line telephone users can dial118101to open the service.

Cancellation of color ring back tone function: call 10000 or log in to the telecom network hall and palm hall for processing.